Set and filmed on location in Los Angeles in 1967, its story deals with nuclear weapons.

It stars Howard Duff, Linda Cristal, Stephen McNally, Nehemiah Persoff, Anne Jeffreys, Oscar Beregi Jr. and Gregory Morton.

[1][2] An agent of the National Bureau of Investigation, Dave Pomeroy, investigates the death of a European nuclear scientist and discovers a Communist plot to detonate a nuclear bomb in Los Angeles in order to instigate World War III.

Once the bomb is activated and Pomeroy receives a lethal dose of ionizing radiation from it, he sacrifices himself to save the city by flying the bomb out over the Pacific Ocean in a helicopter.

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